John Adventure
Platform: Watara Supervision
Region: USA
Media: Cartridge
Controller: Supervision Controls
Genre: Puzzle
Gametype: Undefined
Release Year: 1992
Developer: Sachen
Publisher: Watara
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There are FLASHING BALLS within a flask for you to eliminate by arranging 4 or more balls of the same color in a line. You can do this with PAIRED BALLS which are formed from two single balls that are sprung up from the left/right channels of the flask (like Dr. Mario). 

http://www.pixelpower.on.ca/supervision/games.asp
